<template>
  <div class="login-container">
    <!-- 整个form表单 -->
    <el-form
      ref="loginForm"
      :model="loginForm"
      :rules="loginRules"
      class="login-form"
      auto-complete="on"
      label-position="left"
    >
      <!-- 放置标题图片 @是设置的别名-->
      <div class="title-container">
        <h3 class="title">
          <img src="@/assets/common/login-logo.png" alt="">
        </h3>
      </div>

      <!-- 手机号 -->
      <el-form-item prop="mobile">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="mobile"
          v-model="loginForm.mobile"
          placeholder="请输入手机号码"
          name="mobile"
          type="text"
          tabindex="1"
          auto-complete="off"
        />
      </el-form-item>

      <!-- 密码 -->
      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="请输入密码"
          name="password"
          tabindex="2"
          auto-complete="off"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>

      <!-- 登录按钮  -->
      <el-button
        class="loginBtn"
        :loading="loading"
        type="primary"
        style="width:100%;margin-bottom:30px;"
        @click.native.prevent="handleLogin"
      >登录</el-button>

      <!-- 提示内容 -->
      <div class="tips">
        <span style="margin-right:20px;">账号: 13800000002</span>
        <span> 密码: 123456</span>
      </div>

    </el-form>
  </div>
</template>

<script>
import { validMobile } from '@/utils/validate'
import { mapActions } from 'vuex'
// import http from '@/utils/request'
// import { reqLogin } from '@/api/user'

export default {
  name: 'Login',
  data() {
    // 手机号自定义校验函数
    const validateMobile = (rule, value, callback) => {
      // if (!/^1[3-9]\d{9}$/.test(value)) {
      if (!validMobile(value)) { // 校验不通过
        callback(new Error('请输入正确的手机号码'))
      } else { // 校验通过
        callback()
      }
    }
    return {
      // 1. 数据对象
      loginForm: {
        mobile: '13800000002',
        password: '123456'
      },
      // 2. 规则数组
      loginRules: {
        // 2.1 手机号校验规则
        mobile: [
          // 必填校验
          { required: true, trigger: ['blur', 'change'], message: '请输入登录的手机号' },
          // 自定义校验
          { validator: validateMobile, trigger: ['blur', 'change'] }
        ],
        // 2.2 密码校验规则
        password: [
          // 必填校验
          { required: true, trigger: ['blur', 'change'], message: '密码不能为空' },
          // 长度校验
          { min: 6, max: 16, trigger: ['blur', 'change'], message: '请输入6-16位长度的密码' }
        ]
      },
      loading: false, // 登录按钮的加载动画
      passwordType: 'password',
      redirect: undefined
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  methods: {
    ...mapActions('user', ['login']),
    // 1. 明文或密文展示密码
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    // 2. 点击登录按钮
    handleLogin() {
      // 2.1 对表单做整体校验
      this.$refs.loginForm.validate(flag => {
        if (!flag) return
        console.log('通过校验...')

        // 打开按钮的loading
        this.loading = true

        // 2.2 发起登录请求
        this.login(this.loginForm).then((res) => {
          // 登录成功, 跳转到首页
          this.$message.success('登录成功')
          this.$router.push('/')
        }).catch((err) => {
          // 登录失败, 要给用户提示
          console.log(err.message)
          // this.$message.error('登录失败')
        }).finally(() => {
          // 无论结果成功还是失败, 都会进来
          // 可以在此处做一些通用处理

          // 关闭按钮的loading
          this.loading = false
        })
      })
    }
  }
}
</script>

<style lang="scss">
$bg:#283443;
$light_gray: #407ffe; // 修改输入框字体颜色
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  // 如需要在样式表中使用@别名的时候，需要在@前面加上一个~符号，否则不识别
  background-image: url('~@/assets/common/login.jpg'); // 设置背景图片
  background-position: center; // 将图片位置设置为充满整个屏幕
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.9); // 输入登录表单的背景色
    border-radius: 5px;
    color: #454545;
  }

  .el-form-item__error {
    color: #fff;
    font-size: 14px;
  }

 .loginBtn {
  background: #407ffe;
  height: 64px;
  line-height: 32px;
  font-size: 24px;
 }
}
</style>

<style lang="scss" scoped>
$bg:#2d3a4b;
$dark_gray:#889aa4;
$light_gray:#eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
